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20020617: Interference/noise on 1km GINI composites
- Subject: 20020617: Interference/noise on 1km GINI composites
- Date: Mon, 17 Jun 2002 11:46:17 -0600
Pete,
I found that one culprit is the GRB N0R product for 1620Z.
It has a bad radial. If you try to display it with gpmap,
the program will output the "bad radial" message. The
display of the image stops at that point. This probably means that
there is garbage in the display structure that nex2gini is
reading when creating the composites. I probably have to explicitly
zero out the display (eg clear the virtual display first).
Now that I have a sample image to use, I should be able to correct that.
Steve Chiswell
Unidata User Support
>From: address@hidden (Pete Pokrandt)
>Organization: UCAR/Unidata
>Keywords: 200206171644.g5HGiMJ15399
>
>Steve,
>
>Ever since the NCEP server switchover on Friday, (dunno if
>it's related, but that's when I first noticed the problem)
>the 1km GINI composite images have contained noise occasionally.
>
>It seems to be semi-rectangular shaped, and varies from linearly
>oriented dots to wide bands of colors. For examples of what I'm
>talking about see:
>
>http://www.aos.wisc.edu/weatherdata/mapmaker_scr2/wxp/n0r_020617_1432_wi.gif
>http://www.aos.wisc.edu/weatherdata/mapmaker_scr2/wxp/n0r_020617_1603_wi.gif
>http://www.aos.wisc.edu/weatherdata/mapmaker_scr2/wxp/n0r_020617_1432_mw.gif
>http://www.aos.wisc.edu/weatherdata/mapmaker_scr2/wxp/n0r_020617_1603_mw.gif
>
>I'm SO happy with the composites, just curious about the origin of
>these artifacts.
>
>Pete
>
>--
>+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+
>^ Pete Pokrandt V 1447 AOSS Bldg 1225 W Dayton St^
>^ Systems Programmer V Madison, WI 53706 ^
>^ V address@hidden ^
>^ Dept of Atmos & Oceanic Sciences V (608) 262-3086 (Phone/voicemail) ^
>^ University of Wisconsin-Madison V 262-0166 (Fax) ^
>+<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+
>
